From b75e5f1d2ee244d341fbf9dca3bf0d57440259b8 Mon Sep 17 00:00:00 2001
From: Mikael Persson <mikael.s.persson@gmail.com>
Date: Thu, 4 Sep 2025 13:19:04 -0400
Subject: [PATCH] Support/exclude older vm-sockets kernel implementations

---
 toolbelt/sockets.cc | 2 +-
 toolbelt/sockets.h  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/toolbelt/sockets.cc b/toolbelt/sockets.cc
index f3a8d69..78f8c73 100644
--- a/toolbelt/sockets.cc
+++ b/toolbelt/sockets.cc
@@ -121,7 +121,7 @@ VirtualAddress VirtualAddress::AnyAddress(uint32_t port) {
   return VirtualAddress(VMADDR_CID_ANY, port);
 }
 
-#if defined(__linux__)
+#if defined(__linux__) && defined(VMADDR_CID_LOCAL)
 VirtualAddress VirtualAddress::LocalAddress(uint32_t port) {
   return VirtualAddress(VMADDR_CID_LOCAL, port);
 }
diff --git a/toolbelt/sockets.h b/toolbelt/sockets.h
index 3535518..2dd8f4e 100644
--- a/toolbelt/sockets.h
+++ b/toolbelt/sockets.h
@@ -125,7 +125,7 @@ class VirtualAddress {
   static VirtualAddress HypervisorAddress(uint32_t port);
   static VirtualAddress HostAddress(uint32_t port);
   static VirtualAddress AnyAddress(uint32_t port);
-#if defined(__linux__)
+#if defined(__linux__) && defined(VMADDR_CID_LOCAL)
   static VirtualAddress LocalAddress(uint32_t port);
 #endif